dynamic_forward_proxyv3

type DnsCacheCircuitBreakers struct {

	// The maximum number of pending requests that Envoy will allow to the
	// resolver. If not specified, the default is 1024.
	MaxPendingRequests *wrapperspb.UInt32Value `protobuf:"bytes,1,opt,name=max_pending_requests,json=maxPendingRequests,proto3" json:"max_pending_requests,omitempty"`
	// contains filtered or unexported fields
}

type DnsCacheConfig struct {

	// The name of the cache. Multiple named caches allow independent dynamic forward proxy
	// configurations to operate within a single Envoy process using different configurations. All
	// configurations with the same name *must* otherwise have the same settings when referenced
	// from different configuration components. Configuration will fail to load if this is not
	// the case.
	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
	// The DNS lookup family to use during resolution.
	//
	// [#comment:TODO(mattklein123): Figure out how to support IPv4/IPv6 "happy eyeballs" mode. The
	// way this might work is a new lookup family which returns both IPv4 and IPv6 addresses, and
	// then configures a host to have a primary and fall back address. With this, we could very
	// likely build a "happy eyeballs" connection pool which would race the primary / fall back
	// address and return the one that wins. This same method could potentially also be used for
	// QUIC to TCP fall back.]
	DnsLookupFamily v3.Cluster_DnsLookupFamily `` /* 162-byte string literal not displayed */
	// The DNS refresh rate for unresolved DNS hosts. If not specified defaults to 60s.
	//
	// The refresh rate is rounded to the closest millisecond, and must be at least 1ms.
	//
	// Once a host has been resolved, the refresh rate will be the DNS TTL, capped
	// at a minimum of “dns_min_refresh_rate“.
	DnsRefreshRate *durationpb.Duration `protobuf:"bytes,3,opt,name=dns_refresh_rate,json=dnsRefreshRate,proto3" json:"dns_refresh_rate,omitempty"`
	// The minimum rate that DNS resolution will occur. Per “dns_refresh_rate“, once a host is
	// resolved, the DNS TTL will be used, with a minimum set by “dns_min_refresh_rate“.
	// “dns_min_refresh_rate“ defaults to 5s and must also be >= 1s.
	DnsMinRefreshRate *durationpb.Duration `protobuf:"bytes,14,opt,name=dns_min_refresh_rate,json=dnsMinRefreshRate,proto3" json:"dns_min_refresh_rate,omitempty"`
	// The TTL for hosts that are unused. Hosts that have not been used in the configured time
	// interval will be purged. If not specified defaults to 5m.
	//
	// .. note:
	//
	//	 The TTL is only checked at the time of DNS refresh, as specified by “dns_refresh_rate“. This
	//	 means that if the configured TTL is shorter than the refresh rate the host may not be removed
	//	 immediately.
	//
	//	.. note:
	//
	//	 The TTL has no relation to DNS TTL and is only used to control Envoy's resource usage.
	HostTtl *durationpb.Duration `protobuf:"bytes,4,opt,name=host_ttl,json=hostTtl,proto3" json:"host_ttl,omitempty"`
	// The maximum number of hosts that the cache will hold. If not specified defaults to 1024.
	//
	// .. note:
	//
	//	The implementation is approximate and enforced independently on each worker thread, thus
	//	it is possible for the maximum hosts in the cache to go slightly above the configured
	//	value depending on timing. This is similar to how other circuit breakers work.
	MaxHosts *wrapperspb.UInt32Value `protobuf:"bytes,5,opt,name=max_hosts,json=maxHosts,proto3" json:"max_hosts,omitempty"`
	// If the DNS failure refresh rate is specified,
	// this is used as the cache's DNS refresh rate when DNS requests are failing. If this setting is
	// not specified, the failure refresh rate defaults to the dns_refresh_rate.
	DnsFailureRefreshRate *v3.Cluster_RefreshRate `` /* 128-byte string literal not displayed */
	// The config of circuit breakers for resolver. It provides a configurable threshold.
	// Envoy will use dns cache circuit breakers with default settings even if this value is not set.
	DnsCacheCircuitBreaker *DnsCacheCircuitBreakers `` /* 131-byte string literal not displayed */
	// Always use TCP queries instead of UDP queries for DNS lookups.
	// This field is deprecated in favor of “dns_resolution_config“
	// which aggregates all of the DNS resolver configuration in a single message.
	//
	// Deprecated: Marked as deprecated in envoy/extensions/common/dynamic_forward_proxy/v3/dns_cache.proto.
	UseTcpForDnsLookups bool `protobuf:"varint,8,opt,name=use_tcp_for_dns_lookups,json=useTcpForDnsLookups,proto3" json:"use_tcp_for_dns_lookups,omitempty"`
	// DNS resolution configuration which includes the underlying dns resolver addresses and options.
	// This field is deprecated in favor of
	// :ref:`typed_dns_resolver_config <envoy_v3_api_field_extensions.common.dynamic_forward_proxy.v3.DnsCacheConfig.typed_dns_resolver_config>`.
	//
	// Deprecated: Marked as deprecated in envoy/extensions/common/dynamic_forward_proxy/v3/dns_cache.proto.
	DnsResolutionConfig *v31.DnsResolutionConfig `protobuf:"bytes,9,opt,name=dns_resolution_config,json=dnsResolutionConfig,proto3" json:"dns_resolution_config,omitempty"`
	// DNS resolver type configuration extension. This extension can be used to configure c-ares, apple,
	// or any other DNS resolver types and the related parameters.
	// For example, an object of
	// :ref:`CaresDnsResolverConfig <envoy_v3_api_msg_extensions.network.dns_resolver.cares.v3.CaresDnsResolverConfig>`
	// can be packed into this “typed_dns_resolver_config“. This configuration replaces the
	// :ref:`dns_resolution_config <envoy_v3_api_field_extensions.common.dynamic_forward_proxy.v3.DnsCacheConfig.dns_resolution_config>`
	// configuration.
	// During the transition period when both “dns_resolution_config“ and “typed_dns_resolver_config“ exists,
	// when “typed_dns_resolver_config“ is in place, Envoy will use it and ignore “dns_resolution_config“.
	// When “typed_dns_resolver_config“ is missing, the default behavior is in place.
	// [#extension-category: envoy.network.dns_resolver]
	TypedDnsResolverConfig *v31.TypedExtensionConfig `` /* 132-byte string literal not displayed */
	// Hostnames that should be preresolved into the cache upon creation. This might provide a
	// performance improvement, in the form of cache hits, for hostnames that are going to be
	// resolved during steady state and are known at config load time.
	PreresolveHostnames []*v31.SocketAddress `protobuf:"bytes,10,rep,name=preresolve_hostnames,json=preresolveHostnames,proto3" json:"preresolve_hostnames,omitempty"`
	// The timeout used for DNS queries. This timeout is independent of any timeout and retry policy
	// used by the underlying DNS implementation (e.g., c-areas and Apple DNS) which are opaque.
	// Setting this timeout will ensure that queries succeed or fail within the specified time frame
	// and are then retried using the standard refresh rates. Defaults to 5s if not set.
	DnsQueryTimeout *durationpb.Duration `protobuf:"bytes,11,opt,name=dns_query_timeout,json=dnsQueryTimeout,proto3" json:"dns_query_timeout,omitempty"`
	// Configuration to flush the DNS cache to long term storage.
	KeyValueConfig *v32.KeyValueStoreConfig `protobuf:"bytes,13,opt,name=key_value_config,json=keyValueConfig,proto3" json:"key_value_config,omitempty"`
	// contains filtered or unexported fields
}